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Detect corner frame on form

Asked by Etienne Leblais on 17 Nov 2012

hello, I would like to detect a specific corner in a form which is scanned. The aim is to determine the upper-left corner (left corner of the form's frame). I try to do this with canny edge detector + harris, but I get many corner. So, do everyone has an idea to isolate the corner that I want to get?<<http://hpics.li/60f49cf>>

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Answer by Matt J on 17 Nov 2012
Edited by Matt J on 17 Nov 2012
 edepoints( unique(convhulln(edgepoints))   , :)

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